Drain plug valve for sumps



United States Patent m13,542,057

[72] inventor Louis T. Staiano [56] References Cited 729-4801 St.,Brooklyn, New York 11220 UNlTED STATES PATENTS g fifii 558,355 4/1896Colwell 137/315 45' at te Now, 1970 1,659,478 2/l928 Black l37/454.5X

Primary ExaminerHarold W. Weaklev Attorney-Polachek and SaulsburyABSTRACT: A valve assembly has a cylindrical casing which i a can bescrewed Into a threaded-drain opening or trap. A movable valve member inthe casin is held closed b a s rin which [54] DRAIN PLUG VALVE SUMPS isadjustable in tension. The alve member seals a traisverse claims 12Drawing F apertured partition in the casing, but opens when water enters[52] U.S. Cl. 137/328, the top of the casing and passes through theholes in the parti- 137/454.5, 137/5153, 137/541, 137/542 tion to thevalve member. lnverted T-s1ots in the open top of [51] In LCI. Fl6k15/06 the casing can be engaged by a tool for removing the casing. [50]Field of Search 137/2475, The partition can be removable for removingthe valve 3 l 6, 327, 328, 454.5, 515.3, 541,542 member withoutdisturbing the casing.

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Sheet of 3 5o "fd l Sewer I INVENTOR 52 55 Lou/ls 7. Jfa/ano v 37.WTORNEXS Patented Nov. 24, 1970 Sheet l rd/l Lou/ls 7. 1.5 faiano .8) vAFORNE'YS pad 84 and valve plate 540. A cross pin or key 93 can beinserted in transverse hole 95 in shaft-52a near plate 54a just abovepad 84. This key moves in radial'slots 96 formed in diametricallyopposed positions at hole 50in partition 82' and prevents shaft 52a fromturning in the partition.

The valve plate 54a and pad 84 are normally held closed by coil spring64 in the same manner as in valve assembly 20A. Any pressure exertedbelow plate 54a will force pad 84 up more tightly against the undersideof partition 82 to close holes 48 more tightly. if removal of the entirevalve assembly is desired, the bar 94 can be pushed down to slotportions 42" and can be turned to loosen casing 22a..lhe engagement ofbar 94 in upper slot portions 42 serves to prevent partition 82 frombecoming loose in housing 220. lt also cooperates with key 93 to preventshaft52a from turning. This keeps pad- 84 in a set position on plate 52aso that once a good seal is established with holes 48, this seal is notlost by inadvertent turning of the pad. Pad 84 can be cemented in placeon plate 54a if desired. I

lf removal of partition 82' along with the shaft, spring and other valvemembers in' casing 22a is desired, bar 94 can be pulled out of hole 92,inserted in hole 90 and turned to loosen partition 82'. Turning inreverse direction will set partition 82' in place in the casing 22a.Valve assembly 203 has the advantage that the bar which is used toremove the entire assembly can also be used to remove the interior partswithout disturbing the casing 220. Furthermore, the bar serves theuseful purposes of preventing the partition 82 from becoming loose andof maintaining the set of pad84.

In all forms of the invention, the valve assemblies are made of strong,long wearing replaceable parts. They can be manufactured at relativelylow cost by mass production metal working machinery.

I claim:

1. A valve assembly comprising a generally cylindrical axially verticalcasing open at top and bottom ends to permit passage ofwatertherethrough, said casing beingexternally threaded for engagementin and removal from a threaded drain opening; a circular partitiontransversely disposed inside said casing, said partition having aplurality of circumferentially spaced holes for passing drain watertherethrough; a shaft disposed axially in said casing and'slidablydisposed in a central aperture in said partition; a flat-valve platesecured to said shaft at its lower end under said partition; acoilspring on the shaft bearing at its lower end on said partition; anut and washer on an upper portion of the shaft engaging the upper endof the spring to tension the same for holding the valve plate in aclosed seated position under the partition; and inverted T-shapeddiametrically opposed slots formed in the top of the casing forengagement of a rigid bar therein to facilitate turning the casing toinstall it in said drain opening and to remove it from the drainopening.

2. A valve assembly as defined by claim 1, wherein said partitionis'externally threaded and is removably engaged in an internallythreaded portion of said casing.

3. A valve assembly as defined by claim 1, further comprising aresilient pad on said valve plate for sealing the holes at the undersideof said partition.

4. A valve assembly as defined by claim 1, wherein said partition isexternally threaded and is removably engaged in an internally threadedportion of said casing, and further comprising a resilient pad on saidvalve plate for sealing the holes at the underside of said partition.

5. A valve assembly as defined by claim 4. further comprising means onsaid partition to facilitate turning the partition in the casing.

6. A valve assembly as defined by claim 2, wherein said shaft extendsabove the top end of said casing, said shaft having transverse upper andlower other holes formed therein and spaced apart axially of the shaftfor selectively receiving a transverse rigid bar.

7. A valve assembly as defined by claim 6, further comprising meanskeying said shaft to the partition so that the shaft moves axially withrespect to the partition but 15 held nonrotatable with respect to thepartition, so that turning of the shaft by said bar turns the partition.

8. A valve assembly as defined by claim 6, wherein the lower one of saidtransverse holes is coplanar with said slots, so that said bar can beslidably disposed in upper portions of said slots to keep said shaft andpartition from turning in the casing.

9. A valve assembly as defined by claim 6, further comprising aresilient pad on said valve plate for sealing the firstnamed holes atthe underside of the partition.

10. A valve assembly as defined in claim 1, further comprising a taperedground joint for sealing holes at the underside of the partition.

